Dr Aissa Bouaissi holds a MSc Cert in Chemical Engineering and PhD in Civil Engineering, Material, and has extensive experience in OPC-free cement and concrete and eco-friendly materials, applications of chemical and physical processes in industrial wastes and by-products. He is one of the founders of RGC after he finished his PhD. Previously he worked as a senior process engineer in national and multinational companies in Algeria, where he built his expertise in well cementing services and the Oil and Gas industry.